/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.api.common.io;

import org.apache.flink.annotation.PublicEvolving;

import static org.apache.flink.api.common.io.OutputFormat.InitializationContext;

/** Special {@link InitializationContext}, whose attempt number always zero. */
@PublicEvolving
public class FirstAttemptInitializationContext implements InitializationContext {
    private final int numTasks;

    private final int taskNumber;

    public static FirstAttemptInitializationContext of(int taskNumber, int numTasks) {
        return new FirstAttemptInitializationContext(numTasks, taskNumber);
    }

    private FirstAttemptInitializationContext(int numTasks, int taskNumber) {
        this.numTasks = numTasks;
        this.taskNumber = taskNumber;
    }

    @Override
    public int getNumTasks() {
        return this.numTasks;
    }

    @Override
    public int getTaskNumber() {
        return this.taskNumber;
    }

    @Override
    public int getAttemptNumber() {
        return 0;
    }
}
